In recent decades there has been growing interest in the nature and scale of scientific collaboration. Studies into co-authorship have taken two different approaches. The first one attempts to analyse the reasons why authors collaborate and the consequences of such decision (Laband and Tollison, 2000). The second approach is based on the idea that co-authorship creates a social network of researchers (Barabási et al., 2002;Moody, 2004;Newman, 2001). In this study we have carried out an exploratory analysis of co-authorships in the field of management from the two aforementioned approaches. The results obtained show a growing tendency of the co-authored papers in the field of management, similar to what can be observed in other disciplines. Our study analyses some of the underpinning factors, which have been highlighted in the literature, explaining this tendency. Thus, the progressive quantitative character of research and the influence of the collaboration on the articles' impact are enhanced. The network analysis permits the exploration of the peculiarities of the management in comparison with other fields of knowledge, as well as the existing linkages between the most central and prominent authors within this discipline.

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While firm internationalization processes have been understood as being dynamic, the dimension of speed has rarely been the main focus of research efforts, which, until a decade ago, focused principally on explaining sequences of entry modes and choices of markets. The emergence of the study of international entrepreneurship has enhanced the role of speed, although this has usually been measured in terms of the time lag between a firm's foundation and its initial international action, with little attempt at defining and explaining the speed of the process once it is under way. This study reviews the concept of speed from an internationalization perspective, describes the multidimensional nature of the concept and sets out the different aspects that link timescales with the types of changes -continuous and discontinuous -that take place during internationalizing processes. The paper concludes with a research agenda as a guide for future work on considering the role of speed in the internationalization process.

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